Change serialization method within tree-metadata.ts

Author: bmoffatt

package.json

@@ -167,7 +167,9 @@
       "aws-cdk-lib/table",
       "aws-cdk-lib/table/**",
       "aws-cdk-lib/yaml",
-      "aws-cdk-lib/yaml/**"
+      "aws-cdk-lib/yaml/**",
+      "aws-cdk-lib/json-stream-stringify",
+      "aws-cdk-lib/json-stream-stringify/**"
     ]
   },
   "dependencies": {

packages/aws-cdk-lib/NOTICE

@@ -750,4 +750,32 @@ THIS SOFTWARE IS PROVIDED BY GARY COURT "AS IS" AND ANY EXPRESS OR IMPLIED WARRA
 The views and conclusions contained in the software and documentation are those of the authors and should not be interpreted as representing official policies, either expressed or implied, of Gary Court.
 
 
+----------------
+
+** json-stream-stringify - https://www.npmjs.com/package/json-stream-stringify/v/3.0.0 | MIT
+The MIT License
+
+Copyright (c) 2016 Faleij <[email protected]>
+
+Permission is hereby granted, free of charge,
+to any person obtaining a copy of this software and
+associated documentation files (the "Software"), to
+deal in the Software without restriction, including
+without limitation the rights to use, copy, modify,
+merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom
+the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 ----------------

packages/aws-cdk-lib/core/lib/private/tree-metadata.ts

@@ -2,6 +2,7 @@ import * as fs from 'fs';
 import * as path from 'path';
 
 import { Construct, IConstruct } from 'constructs';
+import { JsonStreamStringify } from 'json-stream-stringify';
 import { ConstructInfo, constructInfoFromConstruct } from './runtime-info';
 import { ArtifactType } from '../../../cloud-assembly-schema';
 import { Annotations } from '../annotations';
@@ -71,14 +72,16 @@ export class TreeMetadata extends Construct {
     this._tree = lookup;
 
     const builder = session.assembly;
-    fs.writeFileSync(path.join(builder.outdir, FILE_PATH), JSON.stringify(tree, (key: string, value: any) => {
+    const jsonStream = new JsonStreamStringify(tree, (key: string, value: any) => {
       // we are adding in the `parent` attribute for internal use
       // and it doesn't make much sense to include it in the
       // tree.json
       if (key === 'parent') return undefined;
       return value;
-    }, 2), { encoding: 'utf-8' });
+    }, 2);
 
+    const out = fs.createWriteStream(path.join(builder.outdir, FILE_PATH), { encoding: 'utf-8' });
+    jsonStream.pipe(out);
     builder.addArtifact('Tree', {
       type: ArtifactType.CDK_TREE,
       properties: {

packages/aws-cdk-lib/package.json

@@ -64,7 +64,8 @@
     ],
     "attribution": [
       "kubectl",
-      "helm"
+      "helm",
+      "json-stream-stringify"
     ]
   },
   "jsii": {
@@ -115,6 +116,7 @@
     "case",
     "fs-extra",
     "ignore",
+    "json-stream-stringify",
     "jsonschema",
     "minimatch",
     "punycode",
@@ -130,6 +132,7 @@
     "case": "1.6.3",
     "fs-extra": "^11.1.1",
     "ignore": "^5.2.4",
+    "json-stream-stringify": "^3.0.0",
     "jsonschema": "^1.4.1",
     "minimatch": "^3.1.2",
     "punycode": "^2.3.0",

yarn.lock

@@ -9044,6 +9044,11 @@ json-stable-stringify-without-jsonify@^1.0.1:
   resolved "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
   integrity sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw==
 
+json-stream-stringify@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.npmjs.org/json-stream-stringify/-/json-stream-stringify-3.1.0.tgz#821df0993f630b7bba8198b1c966e5aaf9ec7657"
+  integrity sha512-ilynhoPlWa29XqgWJTD8V3bOF8k4Ybm3U9Oc7o/CG8qvFMGUzPlh9P4mOj9Ss3VtisA6N2OYevCWa14VRpJtQQ==
+
 json-stringify-nice@^1.1.4:
   version "1.1.4"
   resolved "https://registry.npmjs.org/json-stringify-nice/-/json-stringify-nice-1.1.4.tgz#2c937962b80181d3f317dd39aa323e14f5a60a67"